Pydantic AI
Pydantic AI is a Python SDK that builds typed AI agents that return validated results for developers.
What it is good for
- Building AI agents that return validated, structured data
- Swapping between AI model providers without rewriting code
- Running an agent durably so it survives restarts and failures
- Adding voice or chat interfaces to an existing agent
At a glance
- Who it is for
- Setup
- Requires programming
Level 5 of 5. You need to write code to use it.
- Cost
- Free and open source
- Type
- Framework or SDK
- Tasks
- Works with
- OpenAI, Anthropic, Google, Temporal, DBOS, Pydantic Logfire
Momentum
- Rank this week
- Not ranked (last #47, week 40, 2026)
- Best rank
- #47 week 40, 2026
- GitHub stars
- 20,996
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is Pydantic AI free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use Pydantic AI?
- Yes. You need to write code to use it.
- What does Pydantic AI work with?
- According to its own documentation, it works with OpenAI, Anthropic, Google, Temporal, DBOS, and Pydantic Logfire.
- What is Pydantic AI good for?
- Building AI agents that return validated, structured data, swapping between AI model providers without rewriting code, running an agent durably so it survives restarts and failures, and adding voice or chat interfaces to an existing agent.
Similar agents to Pydantic AI
- LangChain
LangChain is a framework that helps developers build AI agents and LLM-powered applications that connect to models and data sources.
- crewAI
CrewAI is a Python framework that lets developers build teams of AI agents that split up and complete multi-step work.
- LangGraph
LangGraph is a framework that helps developers build long-running agents that keep their state and resume after failures.
- Agno
Agno is a framework and service platform that builds, runs, and improves AI agents for developers and teams who need them available as an API or MCP server.
- Conductor
Conductor is a workflow engine that runs multi-step jobs and AI agents reliably, so steps survive crashes and retries, for developers.
- Agent Development Kit (ADK)
Agent Development Kit is a Python code library that helps developers build, test, and deploy AI agents.